DocumentCode :
3687083
Title :
Performance of Zero-Forcing MUTP assisted IDMA system for downlink communications
Author :
K.S. Vishvaksenan;V. Aswini
Author_Institution :
Electronics and Communication Engineering Department, SSN College of Engineering, Chennai, India
fYear :
2015
fDate :
4/1/2015 12:00:00 AM
Firstpage :
469
Lastpage :
473
Abstract :
In this contribution, we consider the performance of multi-user transmitter pre-processing (MUTP) assisted interleaved division multiple access (IDMA) scheme for downlink (DL) communications. We realize MUTP using Zero Forcing (ZF)algorithm. In this paper, we consider turbo coded system to achieve high coding gain. We construct the turbo code using parallel concatenated convolutional encoder and certain bits are punctured periodically to achieve code rate ½. We construct the pre-processing matrix using channel state information of all the users. We evaluate the performance of such coded ZF-MUTP assisted IDMA system for realistic channel model based on SUI channel model specifications. From our simulations, we observe that the ZF-MUTP assisted multi-user IDMA system provides better performance in terms of bit error rate (BER) with low signal to noise ratio (SNR).
Keywords :
"Multiuser detection","Turbo codes","Decoding","Detectors","Bandwidth","Binary phase shift keying"
Publisher :
ieee
Conference_Titel :
Communications and Signal Processing (ICCSP), 2015 International Conference on
Type :
conf
DOI :
10.1109/ICCSP.2015.7322428
Filename :
7322428
Link To Document :
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